300 Tejas

I believe the velocity, my 338 Lapua Improved gets 3000 fps with a 300 grain bullet easily. I attribute this to the 32" barrel and the 5C Broughton rifling.

If you opened the case to 375, it would have similar capacity to the 375 Tejas, I see no reason it couldn't drive a 50 grain heavier bullet the same speed.

My load is 100 grains Retumbo under a 300 grain bullet, at 2975 fps. I have went to 104 grains of powder with no pressure, velocity for this must be nearing 3100 fps, although I did not have a chronograph when I worked up to a max load, which was never reached because of compression.

I shoot a .338 Tejas with 300g Bergers and Sierra's. I shoot 94.0g of H1000 at 2835fps. I was shooting 95.0g of H1000 but blew a couple primers and had to back down to 94.0. 95.0g was a vert accurate load - 5 shot at .4". case life was 4-5 shots. There is no need live on the edge as I have shot a 24" plate at 1,763 yards on my second shot. One or 2 grains under max is plenty good for me.

I am having a .300 Tejas buildt by Brad at Cross Canyon Arms along with a heavy barrel tactical .338 Tejas.